Calendar device



FIG. 1 is a front plan view of a calendar device in accordance with my new design;

FIG. 2 is a front perspective view thereof;

FIG. 3 is a left side perspective view thereof; and,

FIG. 4 is a bottom elevation view thereof.

The rear of the calendar device is flat and plain. 

CLAIM The ornamental design for a calendar device, as shown and described. 